Gas-alarm.



G. AA PETERSON GAS ALARM. APPLIUATION FILED MAY 17, 1909.

Emma@ Jan.3;.191`1.

- injuriee.

erariale earner fornace.

GUS A. ETERSON, Oll CLARKSBURG, WEST VIRGINIA, ASSIGNOR, BY DIRECT AND MESNE ASSXGNMENTS, OF ONE-THIRD TO A. S. GOULD AND ONE-THIRD TO EDMUND HUG-ILL, BOTH OF CLARKSBURG, WEST-VIRGNIA-.

GAS-ALARM.

Speceaton o1 Letters Patent.

atented dan. 3. i911.

Application tiled May 17', 1909. Serial No. 496,446.

To all ywhom it may concern.'

lle ity known that l. GUS A. PETERSON a citizen ot the United States, residing atA tlarl-:elnn-Q. in the county of l'larrison and State ot' West Virginia, haye invented certain new and useful lnu'iroyements in (laslarms. of which the following is alopecitication. reference being` had therein to the aeeompanyiucA drawing.

vThis invention relates to Vimprovements in automatic pas alarms. and has for its object the production of in'iproved means whereby a marked reduction in gas pressure, such for inetance as would occur were the gasin a. main cut otll from the source ot supply, will cause an alarm to he sounded. l

lt ot'teu happens that the gas will be lighted aty one or more burners, and that 1to1' Sonie reason the supply is cut ott, or the pressure reduced to such an extent that the vgas llame will be extinguished, and this without the valves being turned oil and then the gas pressure coming on again causes the escaping' ot' gas. which withoutI Some means ot alarm` or cutting oil may result in serious ln the drawings: Fionre l is a vertical section o'tl my alarm tevice. Fig. 2 is a vertical section ot the Same looking- 'from the opposite, eide. Fig. is a top plan View or' the same. showing the gong removed therefrom. Fig. al a detail perspective rie ot the tripper. Fig. 5 is a topplan view ot the tripper in a blank form before the same has been folded. Fig, (3 is an end View otl the alarm n'iechanism. lshowing the relation ol the cranllever to the `escapement-leyer. Fig. T is a sectional View of the auxiliary casing, sshowinga n'ioditicat-ion oi:- the device for actuating the alarm.

'Referring` to the drawings by numerals, l designates a primary casing, which has secured to the bottom thereof an auxiliary casing 2. which casing is supported by means oi a pressure, or gas inlety pipe 3, through which the gasis adapted to be admitted into the. auxiliary cup-shaped gas. pressure chamber 2 having` an annular flange 2. lVthin the casing Q- is a normally cup-shaped diaphragm 4, which supports upon the upper face thereof a plunger head 5, which plunger head is provided with vertically-extending stem C, adapted to engage the tripper 7, as hereinafter described. By means of forming the las pressure chamber of a cupshape with an annular' flange on the diaphragm ot corresponding` shape, not only will a quick response be `iv/"en to the operating parts when the pressure is released, but also a gas; tight chamber will be provided.

'Positioned in the primary casing` l is a bell movement. which is mounted between two plates S and Sl, which are, connected by means of the transvmsely-extending rods 10. rl"he bell movement 1s actuated by means of a spring 1li., which is wound around the Shaft. l2 and secured. at one end, to the Stud 1S formed upon the gear ll. The end of the shaft 'l2 projects through the casing'. which is provided with a square, or otherwise constructed end adapted to receive a key as ugual tor winding the springv ll. lllhen re leased` the Spring strives to unwind and thereby imparts to the shaft a rotary motion in the opposite direction. Carried between the plates S and 9 is also a gear 15, which is actuated through the medium of a gearlt, which is mounted, upon the same shaft as the gear This gear l5 meshes with a gear 'il'. which is mounted upon a Shaft 1S to which shaft 1S is ixedly secured an escapement wheel 19. l`heret`ore, it will beseen that as soon as the gear i4 is rotated that the. escapement wheel l?) will also tend to rotate. Upon the opposite Side of the wheel 1+i 'to the spring 1lseeured a atchetL wheel 2.0, whiehisheld against rotation in one direction by means ot a springpreesed pawl Q1.

Fixedly secured, at one end, within the casing l a tripper 7 hereinbe'tore mentioned. preferably, formed from spring metal and Said tripper is provided. near its outer end. with an upwardly-bent portion constituting' an ottset portion. and eaidvportion terminates. at its. outer end. into a redlu'ed-portion 22, which is subatautially halt the width ol thev body `iortion thereof, and the outer endet said reduced portion beveled. as shown in Fig- The reduced-portionor end l2 is iirst bent upon 'the dotted line 2B thereby laying` the reduced portion fiat ag'aiusft the body portion-ot the tripper 7, then the end isaeain bent upwardly and upon the line. 2l. which torina a peculiarly const rueted end, as clearly shown .in AFig. 4.

Fixedly secured to the shatt is an escapement-lever 26, which is provided with` an upper tooth-engaging end 2i', and aloWer hook-shaped tooth-engaging end 28. The escapeinent-lever 26 carries, at its upper end a clapper 29, Which clapper is adapted to engage the gong or bell 30, which is fixedly secured to the upper end of the casing l by means of a bracket 3l, and `When the bell movement is actuated to oscillate the clapper 29 and thereby sound a gong or signal. hiredly secured 'to the same shaft 25 as the esca peinent-lever 26 is a crank-lever 82, which is provided, at its lower end, with an angle extension 33, which is adapted to rest upon the beveled end PA of the tripper.

lilihen the gas pressure is cut od the diahra m will take up the position, as shown in ful lines in Fig. l, and, therefore, the plunger stem 6 Will be Withdrawn and the tripper will lie fiat against the bottoni of the casing and the escapeinent Wheel 19 will be rotated through the medium of the spring 1l, and thereby actuate the clapper 29, and sound an alarm. fis each cog passes by the upper end 27 of the escapement--lever 26, the lower end 28 Will be in engagement With one of the teeth of the ratchet Wheel and thereby cause the escapement-lever 'to osciliate, However, when the pressure is great enough to raise the plunger, as shown in dotted lines in Fig1 1, the stem 6 will engage the tripper 7 and raise the same, Which will cause the `crank-lever to swing to one side, as shown in dotted vlines for the angle extension 33 will readily slide down the beveled end 34 of the tripper and as long as the pressure is great enough to keep the plunger in such a position, theicrank-lever 32 will be held in the position as shown in dotted lines and the hooked end 28 will engage the escapement Wheel 19 thereby holding the bell movement against operation and the alarm from sounding. However, it will be obvious that as soon as the pressure is cut Dif the plun 'er will immediately drop and also allow tllie tripper 7 to drop andthe crank-lever 32 to swing to position, as shown in full lines, and thereby allow the signal toactuate,

' Upon the top of the easing 1, and under the hell 30, I secure a lever-member 35, which is pivotally mounted at 36, and is rovided, at one end, with a knob 37 for acilitating the operation of the same. The lever 35 is also provided with a cam end 38, which is adapted to engage'the clapper 29 and as the saine, is thrown in a, position, as shown in full lines to hold the saine against operation When it is desired to not have the ascesi vsignal operated when the gas/is cut otf, but when the saine is in dotted position, it will' readily allow the same to actuate.

In Fig. 7, l have shown a modification of upwaidly-extending stem 6, which is adapt! ed to engage a tripper 7 similar to that shown in Fig, l and operate the signal as in Fig. 1. The plunger 5a is held against displacement by means of an angle member 7, which passes through an aperture tla and iS tixedly secured to the upper face of the plunger 5a. Therefore, it Will be obvious that as soon as the diaphragm 4 is raised that the integrallextending end 6 will read ily pass througtifthe aperture 81 and engage the tripper for actuating the signal, and that the plunger will be readily held against displacei'nent through the medium of the angle member 7d.

The present invention is especially involved where natural gas is used as means for lighting or heating, and it. provides for means for sounding an alarm if the gas, for any reason should be cut off during the night, and thereby adds to the safety of people 'who are sleeping in a room Where the present invention is used.

`What l claim is:

In a device of the class described, a primary casing, signal actuating means carried thereby, an auxiliary casing secured to said primary casing, means for admitting pressure thereto, a diaphragm secured in said auxiliary casing, a plunger supported by said diaphragm, an integral upwardly-extending stein secured near one end of said plunger and passing through said primaryA casing and adapted to engage said signal actuating means for holding the same against operation, said primary casing being provided with an aperture communication with said auxiliary casing, and an angle p01'- tion positioned in said aperture and having one portion thereof overlianging said primary casing, and the other end ixedly secured to the upper surface of said plunger for preventing the displacement of said plunger.

.In testimony whereof I hereunto affix iny signature in presence of two Witnesses.

' GUS A. PETERSON. VVitnesses:

TANEY HARRISON, M. B. nivLoN.

my invention which shows the auxiliary cas- Y 

